A lude act where the subject's part/parts break free of thier restraints and lurch out into the arena of battle. Genatlia which has cut its self loose and his worming its way down one's boxer shorts and out into public view often causing offence to the viewer.
A: Dude get the camera out, thats a classic herring slip
B: Thats textbook, he'll regret that.
by Woods February 16, 2005
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An act where a man's girlfriend is sleeping, and he discreetly "slips" his penis inside of her.
Pete: I totally fucked her last night!
Bill: Did you give her the slip?
Pete: You bet your ass I did!
by TheDapperFactor February 14, 2015
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Short for, to French kiss a girl using your tongue
Did you slip her the tongue?
by Viking Child January 5, 2015
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Another term for sexual intercourse, usually the rear entry position.
The idea is that the man's vigorous performance will inhibit the woman's ability to walk immediately after intercourse. This is of course a complete fallacy.
"Did you get your end away last night?"

"Yeah, I bent her over & began to slip her a crippler, just under her bum"
by gamerouche March 27, 2014
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euphemism: to have sex with a girl. usually used when discussing a girl or a night out in particular.
How did you get on with that blonde lass last night? Did you slip her a length?
by thehotwombat March 16, 2011
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bang her, give her the dick. If you're Italian, you can say "the italian sausage", if you're Polish you can say "the polish sausage" or "the ol' kielbasa", if you're German you can say "the ol' bratwurst".
The first time I saw her, she gave me that old-fashioned romantic feeling, where I'd do anything to slip her the sausage, preferably indabutt.
by Nick D February 19, 2003
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A slang word used as a discription of an act of foreplay in which two or more fingers are slid inside the females dripping mot.
James:"I really don't know if this girl likes me?"

Damo:"Why don't you ask her out for a meal then slip her a didge under the table and see what happens"

James:"I fucking hate you Damo!"
by Dr Obson October 23, 2007
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